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mpv/audio/out/ao_wasapi_utils.c

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/*
* This file is part of mpv.
*
* Original author: Jonathan Yong <10walls@gmail.com>
*
* mpv is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpv is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <math.h>
#include <libavutil/common.h>
#include <initguid.h>
#include <audioclient.h>
#include <endpointvolume.h>
#include <mmdeviceapi.h>
#include <avrt.h>
#include "audio/out/ao_wasapi_utils.h"
#include "audio/format.h"
#include "osdep/io.h"
#include "osdep/timer.h"
#define MIXER_DEFAULT_LABEL L"mpv - video player"
DEFINE_PROPERTYKEY(mp_PKEY_Device_FriendlyName,
0xa45c254e, 0xdf1c, 0x4efd, 0x80, 0x20,
0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0, 14);
DEFINE_PROPERTYKEY(mp_PKEY_Device_DeviceDesc,
0xa45c254e, 0xdf1c, 0x4efd, 0x80, 0x20,
0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0, 2);
DEFINE_GUID(mp_KSDATAFORMAT_SUBTYPE_PCM,
0x00000001, 0x0000, 0x0010, 0x80, 0x00,
0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);
DEFINE_GUID(mp_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT,
0x00000003, 0x0000, 0x0010, 0x80, 0x00,
0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);
char *mp_GUID_to_str_buf(char *buf, size_t buf_size, const GUID *guid)
{
snprintf(buf, buf_size,
"{%8.8x-%4.4x-%4.4x-%2.2x%2.2x-%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x}",
(unsigned) guid->Data1, guid->Data2, guid->Data3,
guid->Data4[0], guid->Data4[1],
guid->Data4[2], guid->Data4[3],
guid->Data4[4], guid->Data4[5],
guid->Data4[6], guid->Data4[7]);
return buf;
}
char *mp_PKEY_to_str_buf(char *buf, size_t buf_size, const PROPERTYKEY *pkey)
{
buf = mp_GUID_to_str_buf(buf, buf_size, &pkey->fmtid);
size_t guid_len = strnlen(buf, buf_size);
snprintf(buf + guid_len, buf_size - guid_len, ",%"PRIu32, (uint32_t) pkey->pid);
return buf;
}
bool wasapi_fill_VistaBlob(wasapi_state *state)
{
if (!state)
goto exit_label;
state->VistaBlob.hAvrt = LoadLibraryW(L"avrt.dll");
if (!state->VistaBlob.hAvrt)
goto exit_label;
state->VistaBlob.pAvSetMmThreadCharacteristicsW =
(HANDLE (WINAPI *)(LPCWSTR, LPDWORD))
GetProcAddress(state->VistaBlob.hAvrt, "AvSetMmThreadCharacteristicsW");
if (!state->VistaBlob.pAvSetMmThreadCharacteristicsW)
goto exit_label;
state->VistaBlob.pAvRevertMmThreadCharacteristics =
(WINBOOL (WINAPI *)(HANDLE))
GetProcAddress(state->VistaBlob.hAvrt, "AvRevertMmThreadCharacteristics");
if (!state->VistaBlob.pAvRevertMmThreadCharacteristics)
goto exit_label;
return true;
exit_label:
if (state->VistaBlob.hAvrt) {
FreeLibrary(state->VistaBlob.hAvrt);
state->VistaBlob.hAvrt = NULL;
}
return false;
}
const char *wasapi_explain_err(const HRESULT hr)
{
#define E(x) case x : return # x ;
switch (hr) {
E(S_OK)
E(E_FAIL)
E(E_OUTOFMEMORY)
E(E_POINTER)
E(E_HANDLE)
E(E_NOTIMPL)
E(E_INVALIDARG)
E(REGDB_E_IIDNOTREG)
E(CO_E_NOTINITIALIZED)
E(AUDCLNT_E_NOT_INITIALIZED)
E(AUDCLNT_E_ALREADY_INITIALIZED)
E(AUDCLNT_E_WRONG_ENDPOINT_TYPE)
E(AUDCLNT_E_DEVICE_INVALIDATED)
E(AUDCLNT_E_NOT_STOPPED)
E(AUDCLNT_E_BUFFER_TOO_LARGE)
E(AUDCLNT_E_OUT_OF_ORDER)
E(AUDCLNT_E_UNSUPPORTED_FORMAT)
E(AUDCLNT_E_INVALID_SIZE)
E(AUDCLNT_E_DEVICE_IN_USE)
E(AUDCLNT_E_BUFFER_OPERATION_PENDING)
E(AUDCLNT_E_THREAD_NOT_REGISTERED)
E(AUDCLNT_E_EXCLUSIVE_MODE_NOT_ALLOWED)
E(AUDCLNT_E_ENDPOINT_CREATE_FAILED)
E(AUDCLNT_E_SERVICE_NOT_RUNNING)
E(AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED)
E(AUDCLNT_E_EXCLUSIVE_MODE_ONLY)
E(AUDCLNT_E_BUFDURATION_PERIOD_NOT_EQUAL)
E(AUDCLNT_E_EVENTHANDLE_NOT_SET)
E(AUDCLNT_E_INCORRECT_BUFFER_SIZE)
E(AUDCLNT_E_BUFFER_SIZE_ERROR)
E(AUDCLNT_E_CPUUSAGE_EXCEEDED)
E(AUDCLNT_E_BUFFER_ERROR)
E(AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED)
E(AUDCLNT_E_INVALID_DEVICE_PERIOD)
E(AUDCLNT_E_INVALID_STREAM_FLAG)
E(AUDCLNT_E_ENDPOINT_OFFLOAD_NOT_CAPABLE)
E(AUDCLNT_E_RESOURCES_INVALIDATED)
E(AUDCLNT_S_BUFFER_EMPTY)
E(AUDCLNT_S_THREAD_ALREADY_REGISTERED)
E(AUDCLNT_S_POSITION_STALLED)
default:
return "<Unknown>";
}
#undef E
}
static void set_waveformat(WAVEFORMATEXTENSIBLE *wformat,
WORD bits, WORD valid_bits, bool is_float,
DWORD samplerate, struct mp_chmap *channels)
{
int block_align = channels->num * bits / 8;
wformat->Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
wformat->Format.nChannels = channels->num;
wformat->Format.nSamplesPerSec = samplerate;
wformat->Format.nAvgBytesPerSec = samplerate * block_align;
wformat->Format.nBlockAlign = block_align;
wformat->Format.wBitsPerSample = bits;
wformat->Format.cbSize = sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
if (is_float)
wformat->SubFormat = mp_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
else
wformat->SubFormat = mp_KSDATAFORMAT_SUBTYPE_PCM;
wformat->Samples.wValidBitsPerSample = valid_bits;
wformat->dwChannelMask = mp_chmap_to_waveext(channels);
}
static WORD waveformat_valid_bits(const WAVEFORMATEX *wf)
{
if (wf->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
WAVEFORMATEXTENSIBLE *wformat = (WAVEFORMATEXTENSIBLE *)wf;
return wformat->Samples.wValidBitsPerSample;
} else {
return wf->wBitsPerSample;
}
}
static char *waveformat_to_str_buf(char *buf, size_t buf_size, WAVEFORMATEX *wf)
{
char* type = "?";
switch (wf->wFormatTag) {
case WAVE_FORMAT_EXTENSIBLE:
{
WAVEFORMATEXTENSIBLE *wformat = (WAVEFORMATEXTENSIBLE *)wf;
if (IsEqualGUID(&mp_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT,
&wformat->SubFormat))
type = "float";
else if (IsEqualGUID(&mp_KSDATAFORMAT_SUBTYPE_PCM,
&wformat->SubFormat))
type = "s";
break;
}
case WAVE_FORMAT_IEEE_FLOAT:
type = "float";
break;
case WAVE_FORMAT_PCM:
type = "s";
break;
}
int valid_bits = waveformat_valid_bits(wf);
if (valid_bits == wf->wBitsPerSample) {
snprintf(buf, buf_size, "%"PRIu16"ch %s%"PRIu16" @ %"PRIu32"hz",
wf->nChannels, type, valid_bits, (unsigned) wf->nSamplesPerSec);
} else {
snprintf(buf, buf_size, "%"PRIu16"ch %s%"PRIu16" (in %s%"PRIu16") @ %"PRIu32"hz",
wf->nChannels, type, valid_bits, type, wf->wBitsPerSample,
(unsigned) wf->nSamplesPerSec);
}
return buf;
}
#define waveformat_to_str(wf) waveformat_to_str_buf((char[40]){0}, 40, (wf))
static bool waveformat_is_float(WAVEFORMATEX *wf)
{
switch (wf->wFormatTag) {
case WAVE_FORMAT_EXTENSIBLE:
{
WAVEFORMATEXTENSIBLE *wformat = (WAVEFORMATEXTENSIBLE *)wf;
return IsEqualGUID(&mp_KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, &wformat->SubFormat);
}
case WAVE_FORMAT_IEEE_FLOAT:
return true;
default:
return false;
}
}
static bool waveformat_is_pcm(WAVEFORMATEX *wf)
{
switch (wf->wFormatTag) {
case WAVE_FORMAT_EXTENSIBLE:
{
WAVEFORMATEXTENSIBLE *wformat = (WAVEFORMATEXTENSIBLE *)wf;
return IsEqualGUID(&mp_KSDATAFORMAT_SUBTYPE_PCM, &wformat->SubFormat);
}
case WAVE_FORMAT_PCM:
return true;
default:
return false;
}
}
static void waveformat_copy(WAVEFORMATEXTENSIBLE* dst, WAVEFORMATEX* src)
{
if (src->wFormatTag == WAVE_FORMAT_EXTENSIBLE)
*dst = *(WAVEFORMATEXTENSIBLE *)src;
else
dst->Format = *src;
}
static bool set_ao_format(struct ao *ao, WAVEFORMATEX *wf)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
// explicitly disallow 8 bits - this will catch if the
// closestMatch returned by IsFormatSupported in try_format below returns
// a bit depth of less than 16
if (wf->wBitsPerSample < 16)
return false;
int format;
if (waveformat_is_float(wf)) {
format = AF_FORMAT_FLOAT;
} else if (waveformat_is_pcm(wf)) {
format = AF_FORMAT_S32;
} else {
MP_ERR(ao, "Unknown WAVEFORMAT\n");
return false;
}
// set the correct number of bits (the 32-bits assumed above may be wrong)
format = af_fmt_change_bits(format, wf->wBitsPerSample);
if (!format)
return false;
ao->samplerate = wf->nSamplesPerSec;
ao->bps = wf->nAvgBytesPerSec;
ao->format = format;
if (wf->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
WAVEFORMATEXTENSIBLE *wformat = (WAVEFORMATEXTENSIBLE *)wf;
mp_chmap_from_waveext(&ao->channels, wformat->dwChannelMask);
} else {
mp_chmap_from_channels(&ao->channels, wf->nChannels);
}
if (ao->channels.num != wf->nChannels) {
MP_ERR(ao, "Channel map doesn't match number of channels\n");
return false;
}
waveformat_copy(&state->format, wf);
return true;
}
static bool try_format(struct ao *ao,
int bits, int valid_bits, bool is_float,
int samplerate, struct mp_chmap *channels)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
/* If for some reason we get 8-bits, try 16-bit equivalent instead.
This can happen if 8-bits is initially requested in ao->format
or in the unlikely event that GetMixFormat return 8-bits.
If someone with a "vintage" sound card or something complains
this can be reconsidered */
bits = FFMAX(16, bits);
WAVEFORMATEXTENSIBLE wformat;
set_waveformat(&wformat, bits, valid_bits, is_float, samplerate, channels);
MP_VERBOSE(ao, "Trying %s\n", waveformat_to_str(&wformat.Format));
WAVEFORMATEX *closestMatch;
HRESULT hr = IAudioClient_IsFormatSupported(state->pAudioClient,
state->share_mode,
&wformat.Format, &closestMatch);
if (closestMatch) {
waveformat_copy(&wformat, closestMatch);
CoTaskMemFree(closestMatch);
}
if (hr == S_FALSE) {
if (set_ao_format(ao, &wformat.Format)) {
MP_VERBOSE(ao, "Accepted as %dch %s @ %dhz\n",
ao->channels.num, af_fmt_to_str(ao->format), ao->samplerate);
return true;
}
} else if (hr == S_OK) {
if (set_ao_format(ao, &wformat.Format)) {
MP_VERBOSE(ao, "%dch %s @ %dhz accepted\n",
ao->channels.num, af_fmt_to_str(ao->format), samplerate);
return true;
}
}
return false;
}
static bool try_mix_format(struct ao *ao)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
WAVEFORMATEX *wf = NULL;
HRESULT hr = IAudioClient_GetMixFormat(state->pAudioClient, &wf);
EXIT_ON_ERROR(hr);
bool ret = try_format(ao, wf->wBitsPerSample, waveformat_valid_bits(wf),
waveformat_is_float(wf), wf->nSamplesPerSec, &ao->channels);
SAFE_RELEASE(wf, CoTaskMemFree(wf));
return ret;
exit_label:
MP_ERR(state, "Error getting mix format: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
SAFE_RELEASE(wf, CoTaskMemFree(wf));
return false;
}
static bool try_passthrough(struct ao *ao)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
WAVEFORMATEXTENSIBLE wformat = {
.Format = {
.wFormatTag = WAVE_FORMAT_EXTENSIBLE,
.nChannels = ao->channels.num,
.nSamplesPerSec = ao->samplerate,
.nAvgBytesPerSec = (ao->samplerate) * (ao->channels.num * 2),
.nBlockAlign = ao->channels.num * 2,
.wBitsPerSample = 16,
.cbSize = sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX),
},
.Samples.wValidBitsPerSample = 16,
.dwChannelMask = mp_chmap_to_waveext(&ao->channels),
.SubFormat = mp_KSDATAFORMAT_SUBTYPE_PCM,
};
wformat.SubFormat.Data1 = WAVE_FORMAT_DOLBY_AC3_SPDIF; // see INIT_WAVEFORMATEX_GUID macro
MP_VERBOSE(ao, "Trying passthrough for %s...\n", af_fmt_to_str(ao->format));
HRESULT hr = IAudioClient_IsFormatSupported(state->pAudioClient,
state->share_mode,
&wformat.Format, NULL);
if (!FAILED(hr)) {
ao->format = ao->format;
state->format = wformat;
return true;
}
return false;
}
static bool search_sample_formats(struct ao *ao, int samplerate, struct mp_chmap *channels)
{
// try float
for (int bits = 64; bits; bits -= 32) {
if (try_format(ao, bits, bits, true, samplerate, channels))
return true;
}
// try int
// some common bit depths / container sizes (requests welcome)
int bits[] = {32, 24, 32, 24, 32, 16};
int valid_bits[] = {32, 24, 24, 20, 20, 16};
for (int i = 0; i < MP_ARRAY_SIZE(bits); i++) {
if (try_format(ao, bits[i], valid_bits[i], false, samplerate, channels))
return true;
}
return false;
}
static bool find_formats(struct ao *ao)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
if (AF_FORMAT_IS_IEC61937(ao->format)) {
if (try_passthrough(ao))
return true;
MP_ERR(ao, "Couldn't use passthrough");
if (!state->opt_exclusive)
MP_ERR(ao, " (try exclusive mode)");
MP_ERR(ao, "\n");
return false;
}
/* See if the format works as-is */
int bits = af_fmt2bits(ao->format);
if (try_format(ao, bits, bits, af_fmt_is_float(ao->format),
ao->samplerate, &ao->channels))
return true;
if (!state->opt_exclusive) {
/* shared mode, we can use the system default mix format. */
if (try_mix_format(ao))
return true;
MP_WARN(ao, "Couldn't use default mix format\n");
}
/* Exclusive mode, we have to guess. */
while (true) {
int samplerate = ao->samplerate;
// try integer multiples of requested sample rate first
while (samplerate <= 384000) {
if (search_sample_formats(ao, samplerate, &ao->channels))
return true;
samplerate += ao->samplerate;
}
// now try list of typical sample rates (requests welcome)
int samplerates[] = {384000, 352800, 192000, 176400, 96000, 88200,
48000, 44100, 32000, 22050, 16000, 11025,
8000};
for (int i = 0; i < MP_ARRAY_SIZE(samplerates); i++) {
if (search_sample_formats(ao, samplerates[i], &ao->channels))
return true;
}
if (ao->channels.num > 1) {
mp_chmap_from_channels(&ao->channels, ao->channels.num - 1);
} else {
MP_ERR(ao, "Couldn't find acceptable audio format\n");
return false;
}
}
}
static HRESULT init_clock(struct wasapi_state *state) {
HRESULT hr;
hr = IAudioClient_GetService(state->pAudioClient,
&IID_IAudioClock,
(void **)&state->pAudioClock);
EXIT_ON_ERROR(hr);
hr = IAudioClock_GetFrequency(state->pAudioClock, &state->clock_frequency);
EXIT_ON_ERROR(hr);
QueryPerformanceFrequency(&state->qpc_frequency);
atomic_store(&state->sample_count, 0);
MP_VERBOSE(state, "IAudioClock::GetFrequency gave a frequency of %"PRIu64".\n",
(uint64_t) state->clock_frequency);
return S_OK;
exit_label:
MP_ERR(state, "Error obtaining the audio device's timing: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
return hr;
}
static HRESULT init_session_display(struct wasapi_state *state) {
HRESULT hr;
wchar_t path[MAX_PATH+12] = {0};
hr = IAudioClient_GetService(state->pAudioClient,
&IID_IAudioSessionControl,
(void **)&state->pSessionControl);
EXIT_ON_ERROR(hr);
GetModuleFileNameW(NULL, path, MAX_PATH);
lstrcatW(path, L",-IDI_ICON1");
hr = IAudioSessionControl_SetDisplayName(state->pSessionControl, MIXER_DEFAULT_LABEL, NULL);
EXIT_ON_ERROR(hr);
hr = IAudioSessionControl_SetIconPath(state->pSessionControl, path, NULL);
EXIT_ON_ERROR(hr);
return S_OK;
exit_label:
MP_WARN(state, "Error setting audio session display name: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
return S_OK; // No reason to abort initialization.
}
static HRESULT fix_format(struct ao *ao)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
HRESULT hr;
REFERENCE_TIME devicePeriod, bufferDuration, bufferPeriod;
MP_DBG(state, "IAudioClient::GetDevicePeriod\n");
hr = IAudioClient_GetDevicePeriod(state->pAudioClient,&devicePeriod, NULL);
MP_VERBOSE(state, "Device period: %.2g ms\n", (double) devicePeriod / 10000.0 );
/* integer multiple of device period close to 50ms */
bufferPeriod = bufferDuration = ceil(50.0 * 10000.0 / devicePeriod) * devicePeriod;
/* handle unsupported buffer size */
/* hopefully this shouldn't happen because of the above integer device period */
/* http://msdn.microsoft.com/en-us/library/windows/desktop/dd370875%28v=vs.85%29.aspx */
int retries=0;
reinit:
if (state->share_mode == AUDCLNT_SHAREMODE_SHARED)
bufferPeriod = 0;
MP_DBG(state, "IAudioClient::Initialize\n");
hr = IAudioClient_Initialize(state->pAudioClient,
state->share_mode,
AUDCLNT_STREAMFLAGS_EVENTCALLBACK,
bufferDuration,
bufferPeriod,
&(state->format.Format),
NULL);
/* something about buffer sizes on Win7 */
if (hr == AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED) {
if (retries > 0)
EXIT_ON_ERROR(hr);
else
retries ++;
MP_VERBOSE(state, "IAudioClient::Initialize negotiation failed with %s (0x%"PRIx32"), used %lld * 100ns\n",
wasapi_explain_err(hr), (uint32_t) hr, bufferDuration);
IAudioClient_GetBufferSize(state->pAudioClient, &state->bufferFrameCount);
bufferPeriod = bufferDuration =
(REFERENCE_TIME) ((10000.0 * 1000 / state->format.Format.nSamplesPerSec *
state->bufferFrameCount) + 0.5);
IAudioClient_Release(state->pAudioClient);
state->pAudioClient = NULL;
hr = IMMDeviceActivator_Activate(state->pDevice,
&IID_IAudioClient, CLSCTX_ALL,
NULL, (void **)&state->pAudioClient);
goto reinit;
}
EXIT_ON_ERROR(hr);
MP_DBG(state, "IAudioClient::Initialize pRenderClient\n");
hr = IAudioClient_GetService(state->pAudioClient,
&IID_IAudioRenderClient,
(void **)&state->pRenderClient);
EXIT_ON_ERROR(hr);
MP_DBG(state, "IAudioClient::Initialize pAudioVolume\n");
hr = IAudioClient_GetService(state->pAudioClient,
&IID_ISimpleAudioVolume,
(void **)&state->pAudioVolume);
EXIT_ON_ERROR(hr);
MP_DBG(state, "IAudioClient::Initialize IAudioClient_SetEventHandle\n");
hr = IAudioClient_SetEventHandle(state->pAudioClient, state->hFeed);
EXIT_ON_ERROR(hr);
MP_DBG(state, "IAudioClient::Initialize IAudioClient_GetBufferSize\n");
hr = IAudioClient_GetBufferSize(state->pAudioClient,
&state->bufferFrameCount);
EXIT_ON_ERROR(hr);
ao->device_buffer = state->bufferFrameCount;
state->buffer_block_size = state->format.Format.nChannels *
state->format.Format.wBitsPerSample / 8 *
state->bufferFrameCount;
bufferDuration =
(REFERENCE_TIME) ((10000.0 * 1000 / state->format.Format.nSamplesPerSec *
state->bufferFrameCount) + 0.5);
MP_VERBOSE(state, "Buffer frame count: %"PRIu32" (%.2g ms)\n",
state->bufferFrameCount, (double) bufferDuration / 10000.0 );
hr = init_clock(state);
EXIT_ON_ERROR(hr);
hr = init_session_display(state);
EXIT_ON_ERROR(hr);
if (state->VistaBlob.hAvrt) {
state->hTask =
state->VistaBlob.pAvSetMmThreadCharacteristicsW(L"Pro Audio", &state->taskIndex);
}
MP_VERBOSE(state, "Format fixed. Using %lld byte buffer block size\n",
(long long) state->buffer_block_size);
return S_OK;
exit_label:
MP_ERR(state, "Error initializing device: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
return hr;
}
static char* get_device_id(IMMDevice *pDevice) {
if (!pDevice) {
return NULL;
}
LPWSTR devid = NULL;
char *idstr = NULL;
HRESULT hr = IMMDevice_GetId(pDevice, &devid);
EXIT_ON_ERROR(hr);
idstr = mp_to_utf8(NULL, devid);
if (strstr(idstr, "{0.0.0.00000000}.")) {
char *stripped = talloc_strdup(NULL, idstr + strlen("{0.0.0.00000000}."));
talloc_free(idstr);
idstr = stripped;
}
exit_label:
SAFE_RELEASE(devid, CoTaskMemFree(devid));
return idstr;
}
static char* get_device_name(IMMDevice *pDevice) {
if (!pDevice) {
return NULL;
}
IPropertyStore *pProps = NULL;
char *namestr = NULL;
HRESULT hr = IMMDevice_OpenPropertyStore(pDevice, STGM_READ, &pProps);
EXIT_ON_ERROR(hr);
PROPVARIANT devname;
PropVariantInit(&devname);
hr = IPropertyStore_GetValue(pProps, &mp_PKEY_Device_FriendlyName, &devname);
EXIT_ON_ERROR(hr);
namestr = mp_to_utf8(NULL, devname.pwszVal);
exit_label:
PropVariantClear(&devname);
SAFE_RELEASE(pProps, IPropertyStore_Release(pProps));
return namestr;
}
static char* get_device_desc(IMMDevice *pDevice) {
if (!pDevice) {
return NULL;
}
IPropertyStore *pProps = NULL;
char *desc = NULL;
HRESULT hr = IMMDevice_OpenPropertyStore(pDevice, STGM_READ, &pProps);
EXIT_ON_ERROR(hr);
PROPVARIANT devdesc;
PropVariantInit(&devdesc);
hr = IPropertyStore_GetValue(pProps, &mp_PKEY_Device_DeviceDesc, &devdesc);
EXIT_ON_ERROR(hr);
desc = mp_to_utf8(NULL, devdesc.pwszVal);
exit_label:
PropVariantClear(&devdesc);
SAFE_RELEASE(pProps, IPropertyStore_Release(pProps));
return desc;
}
// frees *idstr
static int device_id_match(char *idstr, char *candidate) {
if (idstr == NULL || candidate == NULL)
return 0;
int found = 0;
#define FOUND(x) do { found = (x); goto end; } while(0)
if (strcmp(idstr, candidate) == 0)
FOUND(1);
if (strstr(idstr, "{0.0.0.00000000}.")) {
char *start = idstr + strlen("{0.0.0.00000000}.");
if (strcmp(start, candidate) == 0)
FOUND(1);
}
#undef FOUND
end:
talloc_free(idstr);
return found;
}
// Warning: ao and list are NULL in the "--ao=wasapi:device=help" path!
static HRESULT enumerate_with_state(struct mp_log *log, struct ao *ao,
struct ao_device_list *list,
char *header, int status, int with_id)
{
HRESULT hr;
IMMDeviceEnumerator *pEnumerator = NULL;
IMMDeviceCollection *pDevices = NULL;
IMMDevice *pDevice = NULL;
char *defid = NULL;
hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL,
&IID_IMMDeviceEnumerator, (void **)&pEnumerator);
EXIT_ON_ERROR(hr);
hr = IMMDeviceEnumerator_GetDefaultAudioEndpoint(pEnumerator,
eRender, eMultimedia,
&pDevice);
EXIT_ON_ERROR(hr);
defid = get_device_id(pDevice);
SAFE_RELEASE(pDevice, IMMDevice_Release(pDevice));
hr = IMMDeviceEnumerator_EnumAudioEndpoints(pEnumerator, eRender,
status, &pDevices);
EXIT_ON_ERROR(hr);
int count;
IMMDeviceCollection_GetCount(pDevices, &count);
if (count > 0) {
mp_info(log, "%s\n", header);
}
for (int i = 0; i < count; i++) {
hr = IMMDeviceCollection_Item(pDevices, i, &pDevice);
EXIT_ON_ERROR(hr);
char *name = get_device_name(pDevice);
char *id = get_device_id(pDevice);
char *mark = "";
if (strcmp(id, defid) == 0)
mark = " (default)";
if (with_id) {
mp_info(log, "Device #%d: %s, ID: %s%s\n", i, name, id, mark);
} else {
mp_info(log, "%s, ID: %s%s\n", name, id, mark);
}
if (ao) {
char *desc = talloc_asprintf(NULL, "%s, ID: %s%s", name, id, mark);
struct ao_device_desc e = {id, desc};
ao_device_list_add(list, ao, &e);
}
talloc_free(name);
talloc_free(id);
SAFE_RELEASE(pDevice, IMMDevice_Release(pDevice));
}
talloc_free(defid);
SAFE_RELEASE(pDevices, IMMDeviceCollection_Release(pDevices));
SAFE_RELEASE(pEnumerator, IMMDeviceEnumerator_Release(pEnumerator));
return S_OK;
exit_label:
talloc_free(defid);
SAFE_RELEASE(pDevice, IMMDevice_Release(pDevice));
SAFE_RELEASE(pDevices, IMMDeviceCollection_Release(pDevices));
SAFE_RELEASE(pEnumerator, IMMDeviceEnumerator_Release(pEnumerator));
return hr;
}
bool wasapi_enumerate_devices(struct mp_log *log, struct ao *ao,
struct ao_device_list *list)
{
HRESULT hr;
hr = enumerate_with_state(log, ao, list, "Active devices:",
DEVICE_STATE_ACTIVE, 1);
EXIT_ON_ERROR(hr);
hr = enumerate_with_state(log, ao, list, "Unplugged devices:",
DEVICE_STATE_UNPLUGGED, 0);
EXIT_ON_ERROR(hr);
return true;
exit_label:
mp_err(log, "Error enumerating devices: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
return false;
}
static HRESULT load_default_device(struct ao *ao, IMMDeviceEnumerator* pEnumerator,
IMMDevice **ppDevice)
{
HRESULT hr = IMMDeviceEnumerator_GetDefaultAudioEndpoint(pEnumerator,
eRender, eMultimedia,
ppDevice);
EXIT_ON_ERROR(hr);
char *id = get_device_id(*ppDevice);
MP_VERBOSE(ao, "Default device ID: %s\n", id);
talloc_free(id);
return S_OK;
exit_label:
MP_ERR(ao , "Error loading default device: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
return hr;
}
static HRESULT find_and_load_device(struct ao *ao, IMMDeviceEnumerator* pEnumerator,
IMMDevice **ppDevice, char *search)
{
HRESULT hr;
IMMDeviceCollection *pDevices = NULL;
IMMDevice *pTempDevice = NULL;
LPWSTR deviceID = NULL;
char *end;
int devno = (int) strtol(search, &end, 10);
char *devid = NULL;
if (end == search || *end) {
devid = search;
}
int search_err = 0;
if (devid == NULL) {
hr = IMMDeviceEnumerator_EnumAudioEndpoints(pEnumerator, eRender,
DEVICE_STATE_ACTIVE, &pDevices);
EXIT_ON_ERROR(hr);
int count;
IMMDeviceCollection_GetCount(pDevices, &count);
if (devno >= count) {
MP_ERR(ao, "No device #%d\n", devno);
} else {
MP_VERBOSE(ao, "Finding device #%d\n", devno);
hr = IMMDeviceCollection_Item(pDevices, devno, &pTempDevice);
EXIT_ON_ERROR(hr);
hr = IMMDevice_GetId(pTempDevice, &deviceID);
EXIT_ON_ERROR(hr);
MP_VERBOSE(ao, "Found device #%d\n", devno);
}
} else {
hr = IMMDeviceEnumerator_EnumAudioEndpoints(pEnumerator, eRender,
DEVICE_STATE_ACTIVE|DEVICE_STATE_UNPLUGGED,
&pDevices);
EXIT_ON_ERROR(hr);
int count;
IMMDeviceCollection_GetCount(pDevices, &count);
MP_VERBOSE(ao, "Finding device %s\n", devid);
IMMDevice *prevDevice = NULL;
for (int i = 0; i < count; i++) {
hr = IMMDeviceCollection_Item(pDevices, i, &pTempDevice);
EXIT_ON_ERROR(hr);
if (device_id_match(get_device_id(pTempDevice), devid)) {
hr = IMMDevice_GetId(pTempDevice, &deviceID);
EXIT_ON_ERROR(hr);
break;
}
char *desc = get_device_desc(pTempDevice);
if (strstr(desc, devid)) {
if (deviceID) {
char *name;
if (!search_err) {
MP_ERR(ao, "Multiple matching devices found\n");
name = get_device_name(prevDevice);
MP_ERR(ao, "%s\n", name);
talloc_free(name);
search_err = 1;
}
name = get_device_name(pTempDevice);
MP_ERR(ao, "%s\n", name);
talloc_free(name);
}
hr = IMMDevice_GetId(pTempDevice, &deviceID);
prevDevice = pTempDevice;
}
talloc_free(desc);
SAFE_RELEASE(pTempDevice, IMMDevice_Release(pTempDevice));
}
if (deviceID == NULL) {
MP_ERR(ao, "Could not find device %s\n", devid);
}
}
SAFE_RELEASE(pTempDevice, IMMDevice_Release(pTempDevice));
SAFE_RELEASE(pDevices, IMMDeviceCollection_Release(pDevices));
if (deviceID == NULL || search_err) {
hr = E_NOTFOUND;
} else {
MP_VERBOSE(ao, "Loading device %S\n", deviceID);
hr = IMMDeviceEnumerator_GetDevice(pEnumerator, deviceID, ppDevice);
if (FAILED(hr)) {
MP_ERR(ao, "Could not load requested device\n");
}
}
exit_label:
SAFE_RELEASE(pTempDevice, IMMDevice_Release(pTempDevice));
SAFE_RELEASE(pDevices, IMMDeviceCollection_Release(pDevices));
CoTaskMemFree(deviceID);
return hr;
}
int wasapi_validate_device(struct mp_log *log, const m_option_t *opt,
struct bstr name, struct bstr param)
{
if (bstr_equals0(param, "help")) {
wasapi_enumerate_devices(log, NULL, NULL);
return M_OPT_EXIT;
}
mp_dbg(log, "Validating device=%s\n", param.start);
char *end;
int devno = (int) strtol(param.start, &end, 10);
int ret = 1;
if ((end == (void *)param.start || *end) && devno < 0)
ret = M_OPT_OUT_OF_RANGE;
mp_dbg(log, "device=%s %svalid\n", param.start, ret == 1 ? "" : "not ");
return ret;
}
HRESULT wasapi_setup_proxies(struct wasapi_state *state) {
HRESULT hr;
#define UNMARSHAL(type, to, from) do { \
hr = CoGetInterfaceAndReleaseStream((from), &(type), (void **)&(to)); \
(from) = NULL; \
EXIT_ON_ERROR(hr); \
} while (0)
UNMARSHAL(IID_IAudioClient, state->pAudioClientProxy, state->sAudioClient);
UNMARSHAL(IID_ISimpleAudioVolume, state->pAudioVolumeProxy, state->sAudioVolume);
UNMARSHAL(IID_IAudioEndpointVolume, state->pEndpointVolumeProxy, state->sEndpointVolume);
UNMARSHAL(IID_IAudioSessionControl, state->pSessionControlProxy, state->sSessionControl);
#undef UNMARSHAL
return S_OK;
exit_label:
MP_ERR(state, "Error reading COM proxy: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
return hr;
}
void wasapi_release_proxies(wasapi_state *state) {
SAFE_RELEASE(state->pAudioClientProxy, IUnknown_Release(state->pAudioClientProxy));
SAFE_RELEASE(state->pAudioVolumeProxy, IUnknown_Release(state->pAudioVolumeProxy));
SAFE_RELEASE(state->pEndpointVolumeProxy, IUnknown_Release(state->pEndpointVolumeProxy));
SAFE_RELEASE(state->pSessionControlProxy, IUnknown_Release(state->pSessionControlProxy));
}
static HRESULT create_proxies(struct wasapi_state *state) {
HRESULT hr;
#define MARSHAL(type, to, from) do { \
hr = CreateStreamOnHGlobal(NULL, TRUE, &(to)); \
EXIT_ON_ERROR(hr); \
hr = CoMarshalInterThreadInterfaceInStream(&(type), \
(IUnknown *)(from), \
&(to)); \
EXIT_ON_ERROR(hr); \
} while (0)
MARSHAL(IID_IAudioClient, state->sAudioClient, state->pAudioClient);
MARSHAL(IID_ISimpleAudioVolume, state->sAudioVolume, state->pAudioVolume);
MARSHAL(IID_IAudioEndpointVolume, state->sEndpointVolume, state->pEndpointVolume);
MARSHAL(IID_IAudioSessionControl, state->sSessionControl, state->pSessionControl);
return S_OK;
exit_label:
MP_ERR(state, "Error creating COM proxy: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
return hr;
}
static void destroy_proxies(struct wasapi_state *state) {
SAFE_RELEASE(state->sAudioClient, IUnknown_Release(state->sAudioClient));
SAFE_RELEASE(state->sAudioVolume, IUnknown_Release(state->sAudioVolume));
SAFE_RELEASE(state->sEndpointVolume, IUnknown_Release(state->sEndpointVolume));
SAFE_RELEASE(state->sSessionControl, IUnknown_Release(state->sSessionControl));
}
void wasapi_dispatch(void)
{
/* dispatch any possible pending messages */
MSG msg;
while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
DispatchMessage(&msg);
}
HRESULT wasapi_thread_init(struct ao *ao)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
HRESULT hr;
MP_DBG(ao, "Init wasapi thread\n");
int64_t retry_wait = 1;
retry:
state->initial_volume = -1.0;
hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL,
&IID_IMMDeviceEnumerator, (void **)&state->pEnumerator);
EXIT_ON_ERROR(hr);
char *device = state->opt_device;
if (!device || !device[0])
device = ao->device;
if (!device || !device[0])
hr = load_default_device(ao, state->pEnumerator, &state->pDevice);
else
hr = find_and_load_device(ao, state->pEnumerator, &state->pDevice, device);
EXIT_ON_ERROR(hr);
char *name = get_device_name(state->pDevice);
MP_VERBOSE(ao, "Device loaded: %s\n", name);
talloc_free(name);
MP_DBG(ao, "Activating pAudioClient interface\n");
hr = IMMDeviceActivator_Activate(state->pDevice, &IID_IAudioClient,
CLSCTX_ALL, NULL, (void **)&state->pAudioClient);
EXIT_ON_ERROR(hr);
MP_DBG(ao, "Activating pEndpointVolume interface\n");
hr = IMMDeviceActivator_Activate(state->pDevice, &IID_IAudioEndpointVolume,
CLSCTX_ALL, NULL,
(void **)&state->pEndpointVolume);
EXIT_ON_ERROR(hr);
MP_DBG(ao, "Query hardware volume support\n");
hr = IAudioEndpointVolume_QueryHardwareSupport(state->pEndpointVolume,
&state->vol_hw_support);
if (hr != S_OK)
MP_WARN(ao, "Error querying hardware volume control: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
MP_DBG(ao, "Probing formats\n");
if (!find_formats(ao)) {
hr = E_FAIL;
EXIT_ON_ERROR(hr);
}
MP_DBG(ao, "Fixing format\n");
hr = fix_format(ao);
if ((hr == AUDCLNT_E_DEVICE_IN_USE ||
hr == AUDCLNT_E_DEVICE_INVALIDATED) &&
retry_wait <= 8) {
wasapi_thread_uninit(ao);
MP_WARN(ao, "Retrying in %"PRId64" us\n", retry_wait);
mp_sleep_us(retry_wait);
retry_wait *= 2;
goto retry;
}
EXIT_ON_ERROR(hr);
MP_DBG(ao, "Creating proxies\n");
hr = create_proxies(state);
EXIT_ON_ERROR(hr);
MP_DBG(ao, "Read volume levels\n");
if (state->opt_exclusive)
IAudioEndpointVolume_GetMasterVolumeLevelScalar(state->pEndpointVolume,
&state->initial_volume);
else
ISimpleAudioVolume_GetMasterVolume(state->pAudioVolume,
&state->initial_volume);
state->previous_volume = state->initial_volume;
wasapi_change_init(ao);
MP_DBG(ao, "Init wasapi thread done\n");
return S_OK;
exit_label:
MP_ERR(state, "Error setting up audio thread: %s (0x%"PRIx32")\n",
wasapi_explain_err(hr), (uint32_t) hr);
return hr;
}
void wasapi_thread_uninit(struct ao *ao)
{
struct wasapi_state *state = (struct wasapi_state *)ao->priv;
wasapi_dispatch();
if (state->pAudioClient)
IAudioClient_Stop(state->pAudioClient);
wasapi_change_uninit(ao);
if (state->opt_exclusive &&
state->pEndpointVolume &&
state->initial_volume > 0 )
IAudioEndpointVolume_SetMasterVolumeLevelScalar(state->pEndpointVolume,
state->initial_volume, NULL);
destroy_proxies(state);
SAFE_RELEASE(state->pRenderClient, IAudioRenderClient_Release(state->pRenderClient));
SAFE_RELEASE(state->pAudioClock, IAudioClock_Release(state->pAudioClock));
SAFE_RELEASE(state->pAudioVolume, ISimpleAudioVolume_Release(state->pAudioVolume));
SAFE_RELEASE(state->pEndpointVolume, IAudioEndpointVolume_Release(state->pEndpointVolume));
SAFE_RELEASE(state->pSessionControl, IAudioSessionControl_Release(state->pSessionControl));
SAFE_RELEASE(state->pAudioClient, IAudioClient_Release(state->pAudioClient));
SAFE_RELEASE(state->pDevice, IMMDevice_Release(state->pDevice));
SAFE_RELEASE(state->pEnumerator, IMMDeviceEnumerator_Release(state->pEnumerator));
if (state->hTask)
state->VistaBlob.pAvRevertMmThreadCharacteristics(state->hTask);
MP_DBG(ao, "Thread uninit done\n");
}
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